High-speed reciprocating type brush cleaning complete equipment for inner wall of pipe

Abstract

The utility model relates to pipe inner wall high-speed reciprocating type brush cleaning complete equipment which comprises a rack, a flexible shaft with a brush, a flexible shaft conveying device, a brush cylinder and a supporting assembly, and the flexible shaft conveying device comprises a flexible shaft butt clamp conveying wheel set and a servo motor and is used for clamping and driving the flexible shaft to form axial horizontal movement; the left end of the brush cylinder and the flexible shaft form sliding seal, the right end of the brush cylinder is provided with a pipe connector connected with a pipe fitting in a sealed mode, the circumferential face of the brush cylinder is provided with a liquid inlet communicated with the interior and an overflow pipe arranged upwards, and the end of the overflow pipe is open. The supporting assembly comprises a cleaning tank and a pipe positioning support. A flow guide groove is formed in the bottom of the cleaning groove, a circulation box filled with cleaning liquid is arranged at the right end of the rack, the liquid in the cleaning groove is guided into the circulation box through the flow guide groove, the circulation box is communicated with a liquid inlet of a brush cylinder through a pump machine and a pipeline, and the open end of an overflow pipe of the brush cylinder faces the interior of the cleaning groove. The pipe inner wall is effectively cleaned, the cleaning efficiency is high, the effect is good, the input cost is low, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of pipe cleaning equipment, and is a complete set of equipment for high-speed reciprocating brush cleaning of the inner wall of pipes. Background Technology

[0002] Existing methods for cleaning the inner walls of pipes commonly include cleaning fluid cleaning, high-pressure blowing, ball-type cleaning, abrasive cleaning, and brush cleaning, among which brush cleaning is a relatively common method in the current pipe cleaning field. For example, Chinese patent document CN218210972U, authorized on January 3, 2023, entitled "A Cleaning Device for Copper Tubes of a Water-Cooled Refrigeration Unit Condenser," discloses a scheme that uses a motor to drive a flexible shaft, which in turn drives a brush to move and clean inside the copper tube. The advantage of brush cleaning is its simple structure, but its disadvantage is that it is often limited by the length of the tube. When the tube to be cleaned is long, the structure of the brush relying on the flexible shaft for transport and rotation becomes relatively complex, and the characteristics of the flexible shaft itself make it difficult to achieve a large torque output. Therefore, it is difficult to achieve high-speed and stable rotation when the brush rotates with the flexible shaft, resulting in poor cleaning effect and low overall cleaning efficiency when cleaning the inner walls of long tubes. In addition, existing cleaning equipment has a relatively low degree of automation, making it difficult to achieve batch cleaning. Therefore, existing equipment for cleaning the inner walls of long pipes needs to be improved. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a complete set of high-speed reciprocating brush cleaning equipment for pipe inner walls, thereby solving the technical problems of existing similar pipe inner wall brush cleaning equipment being difficult to apply to the cleaning of long pipes, having poor cleaning efficiency and effect, and relatively low automation, making it difficult to apply to batch cleaning of pipes. This objective is achieved through the following technical solution.

[0004] A complete set of high-speed reciprocating brush cleaning equipment for pipe inner walls includes a frame, a brush cleaning device on the upper part of the frame, a flexible shaft with brushes connected to its ends, a flexible shaft conveying device that drives the flexible shaft to reciprocate linearly, a brush cylinder that guides the flexible shaft and the brushes, and a support assembly that positions and supports the pipe to be cleaned. The key structural feature is that the flexible shaft conveying device is fixed to one end of the frame and includes a flexible shaft clamping conveyor wheel assembly and a servo motor that drives the flexible shaft clamping conveyor wheel assembly to rotate. When the flexible shaft clamping conveyor wheel assembly clamps the flexible shaft and rotates, it drives the flexible shaft to move axially horizontally. The brush cylinder is fixed to the frame and located on the right side of the flexible shaft conveying device. The flexible shaft extends horizontally into the brush cylinder and is fixedly connected to the brushes. The left end of the brush cylinder forms a sliding seal with the flexible shaft, and the right end is provided with a pipe joint for sealing connection to the pipe fitting. The circumference of the brush cylinder is provided with a liquid inlet communicating with the interior and an upward-facing overflow pipe with an open end. The support assembly is fixed to the upper end face of the frame and includes a cleaning tank and a pipe positioning bracket fixed in the cleaning tank. When the pipe fitting to be cleaned is sealed to the pipe joint of the brush cylinder, the pipe fitting is located in the pipe positioning bracket. The bottom of the cleaning tank is provided with a guide channel, and the right end of the frame is provided with a circulation tank filled with cleaning fluid. The liquid in the cleaning tank is guided to the circulation tank through the guide channel. The circulation tank is connected to the liquid inlet of the brush cylinder through a pump and pipeline. A flow regulating valve is provided in the pipeline, and the open end of the overflow pipe of the brush cylinder faces the cleaning tank. The above structure utilizes a flexible shaft conveyor to drive the flexible shaft and brush in high-speed axial reciprocating motion, effectively cleaning the inner wall of the pipe. During cleaning, cleaning fluid is introduced into the pipe, not only achieving effective cleaning but also providing lubrication, reducing wear between the flexible shaft / brush and the inner wall of the pipe, and extending the equipment's lifespan. Furthermore, the upward-facing overflow pipe on the brush cylinder effectively alleviates the internal pressure generated by the brush's reciprocating motion, reducing resistance during the movement of the flexible shaft and brush, lowering the load on the flexible shaft conveyor, improving the stability of the brush's reciprocating motion, achieving higher cleaning speeds, and further enhancing the cleaning effect. Simultaneously, the upward-facing overflow pipe has a liquid storage and return function. When high or negative pressure conditions are formed inside the pipe, it effectively stores and replenishes liquid, eliminating the need for a large-flow continuous supply of liquid from the brush cylinder inlet, effectively saving equipment energy and cleaning fluid costs.

[0005] The left end of the brush cylinder is provided with a flexible shaft sliding seat that slides with the flexible shaft. The flexible shaft sliding seat has a shaft hole that slides with the flexible shaft. The left end of the shaft hole has a sealing cavity, and a sealing ring that forms a sliding seal with the flexible shaft is provided in the sealing cavity. An end cap is connected to the outer end of the sealing cavity to limit the sealing ring. The middle part of the shaft hole has an air inlet hole for connecting to external air intake. Air enters through the air inlet hole to form an air seal between the flexible shaft and the shaft hole. Through this structure, a reliable sliding seal is achieved between the brush cylinder and the flexible shaft.

[0006] The right end of the flexible shaft sliding seat has a sliding cavity, and a sliding sleeve that forms a limiting sliding along the axial direction of the shaft hole is provided in the sliding cavity. The sliding sleeve has an inner hole that slides with the flexible shaft, and a spring is provided to abut against the inner end of the sliding cavity. A proximity switch is fixedly provided on the circumference of the flexible shaft sliding seat, and the contact of the proximity switch extends into the sliding cavity. The connection between the brush and the flexible shaft has a limiting part that abuts against the end of the sliding sleeve. When the limiting part moves to the end of the sliding sleeve with the flexible shaft, it pushes the sliding sleeve to compress the spring until the sliding sleeve contacts the contact of the proximity switch. The proximity switch forms a control connection with the flexible shaft conveying device, and the flexible shaft conveying device uses the signal of the proximity switch as the initial position for the flexible shaft stroke control. Through this structure, a proximity switch for identifying brush reset is added inside the brush cylinder, and the signal of the proximity switch is connected to the flexible shaft conveying device for control, so that the flexible shaft conveying device can more accurately identify the initial state of brush reset and improve the accuracy of the brush reciprocating stroke.

[0007] This complete set of equipment includes a pipe length measuring device for measuring the length of pipe fittings to be cleaned. The pipe length measuring device is located at the pipe fitting loading position on one side of the frame. The device includes a pipe fitting support frame, with a limiting end at one end of the support frame that abuts against one end of the pipe fitting, and a measuring end at the other end that slides axially relative to the support frame. The measuring end is equipped with a measuring sensor. When the pipe fitting is located within the support frame and one end abuts against the limiting end, the measuring end contacts the other end of the pipe fitting, measuring the pipe fitting length. The measuring sensor is electrically connected to the flexible shaft conveying device. The flexible shaft conveying device adds a set length to the pipe fitting length measured by the measuring sensor to determine the stroke length for the flexible shaft to drive the brush in a linear reciprocating motion. This structure enables the flexible shaft conveying device to effectively control the brush's reciprocating stroke, preventing errors in brush stroke that could affect normal brushing operations and reducing the occurrence of accidents.

[0008] This complete set of equipment includes a wedge-shaped adjusting platform, comprising an upper platform and a lower platform with a wedge-shaped guide sliding fit. The lower platform is fixed to the frame, and a lead screw connecting seat is fixed on one side of the lower platform. The lead screw is threadedly engaged with the lead screw connecting seat, with one end of the lead screw abutting against the upper platform and the other end connected to a rotating handle. Under the axial pushing action of the lead screw, the upper platform adjusts its height relative to the wedge surface of the lower platform. The upper platform also supports and fixes the flexible shaft conveyor and the brush cylinder. This structure facilitates the synchronous adjustment of the height position of the flexible shaft conveyor and the brush cylinder, thereby achieving effective fitting and connection with the pipe fittings to be cleaned.

[0009] The complete set of equipment includes several sets of brush cleaning devices arranged side by side on the frame. Each brush cleaning device corresponds to cleaning one pipe fitting, i.e., one cleaning station. The pipe positioning supports of each cleaning station are located in the same cleaning tank. One side of the cleaning tank is the pipe fitting loading side, and the other side is the pipe fitting unloading side. A pipe fitting lifting and conveying mechanism is provided in the cleaning tank corresponding to each cleaning station. Each pipe fitting lifting and conveying mechanism includes a fixed frame, a tilting frame, a hinge plate, a drive cylinder, and a tilting plate. The fixed frame is fixed to the cleaning tank, and the tilting frame is parallel to and above the fixed frame. The two sides of the tilting frame are movably hinged to the two sides of the fixed frame through at least two sets of hinge plates. The tilting frame is relative to the fixed frame. The hinged plate maintains a horizontal position during tilting and lifting. The fixed frame is hinged to the cylinder seat end of the drive cylinder, and the push rod end of the drive cylinder is hinged to the tilting frame. This means the drive cylinder, in conjunction with the tilting frame, tilts and lifts or lowers it relative to the fixed frame. Several tilting plates are fixedly mounted on the upper surface of each tilting frame, with the top surface of each plate forming a guiding slope. Initially, the tilting frame is not lifted relative to the fixed frame, and the slope of the tilting plate is lower than the pipe support height of the pipe positioning bracket in the corresponding cleaning station. When the tilting plate tilts and lifts to its position relative to the fixed frame, the slope of the tilting plate lifts the pipe fitting in the pipe positioning bracket of the corresponding cleaning station and guides it along the slope into the pipe positioning bracket of the next cleaning station or to the unloading side of the pipe fitting. This structure enables simultaneous cleaning of multiple pipe fittings at multiple stations, achieving batch cleaning of pipe fittings.

[0010] Each brush cleaning device in this complete set of equipment corresponds to an independent circulation tank, pump, and pipeline. The bottom of the cleaning tank is divided into independent guide channels for each pipe fitting, with each channel directing the cleaning fluid into its corresponding circulation tank. This structure enables multi-stage cleaning of the pipe fittings, with each stage's circulation tank filled with the required cleaning solution to achieve the corresponding cleaning effect.

[0011] The pipe positioning support within the cleaning tank includes a roller support for rolling support of the pipe fittings and an electric gripper for clamping the pipe fittings. The electric gripper is fixedly connected to a power cylinder, and the power cylinder drives the electric gripper to move in a direction parallel to the corresponding pipe fitting. When the power cylinder pushes the electric gripper into position, the electric gripper causes the pipe fitting to align with the pipe connector of the brush cylinder. When the power cylinder pulls the electric gripper into position, it causes the pipe fitting to separate from the pipe connector of the brush cylinder. This structure enables automatic alignment or separation of the pipe fitting and the pipe connector of the brush cylinder.

[0012] The frame is fixedly equipped with a guide tube that guides and stores the flexible shaft. The guide tube includes a bent section and a straight section. The bent section is fixed to the input end of the flexible shaft conveying device, and the straight section is arranged along the length of the frame. This structure achieves the guiding and storage of the flexible shaft, resulting in a relatively reasonable spatial layout.

[0013] The flexible shaft includes a core shaft and a protective sleeve for the outer core shaft. The core shaft is made of fiberglass rod, carbon fiber rod, or spring steel wire, and the protective sleeve is a flexible plastic component. This structure improves the service life of the flexible shaft.

[0014] The advantages of this utility model are: the overall structure is relatively reasonable, the inner wall of the pipe is effectively cleaned by the high-speed reciprocating brush, the cleaning efficiency is high and the effect is good, the overall automation level is high, the operation and use are relatively convenient, the service life is long, and it is suitable as a brush cleaning device for various pipe fittings, especially long pipe fittings, or as a structural improvement of similar cleaning devices. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the medium-sized brush cylinder structure.

[0017] Figure 3 yes Figure 1 A partial structural diagram.

[0018] Figure 4 This is a schematic diagram of the pipe fitting conveying device of this utility model in use.

[0019] Figure 5 This is a schematic diagram of the pipe length measuring device of this utility model.

[0020] The numbers and names in the diagram are as follows: 1. Frame; 2. Flexible shaft conveyor device; 201. Servo motor; 202. Flexible shaft clamping conveyor wheel assembly; 3. Flexible shaft; 301. Guide tube; 4. Brush cylinder; 401. Liquid inlet; 402. Overflow pipe; 5. Brush; 501. Limiting part; 6. Cleaning tank; 7. Circulation box; 8. Pump; 9. Piping; 10. Fixing frame; 11. Tilting frame; 12. Hinge plate; 13. Drive cylinder; 14. Tilting plate; 15. Limiting part. 16. Support bracket, 17. Roller support bracket, 18. Electric gripper, 19. Power cylinder, 20. Pipe fitting, 21. Flexible shaft sliding seat, 2001. Air inlet, 22. Sealing ring, 23. End cap, 24. Sliding sleeve, 25. Spring, 26. Proximity switch, 27. Pipe connector, 28. Upper platform, 29. Lower platform, 30. Lead screw connecting seat, 31. Lead screw, 32. Rotary handle, 32. Pipe length measuring device, 3201. Limiting end, 3202. Measuring end. Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] like Figures 1-4As shown, the high-speed reciprocating brush cleaning equipment for the inner wall of the pipe includes a frame 1, a brush cleaning device on the upper part of the frame, a flexible shaft 3 with a brush 5 connected to the end, a flexible shaft conveying device 2 that drives the flexible shaft to reciprocate linearly, a brush cylinder 4 that guides the flexible shaft and the end brushes in and out, and a support assembly that positions and supports the pipe fitting 19 to be cleaned. The specific structure is as follows.

[0023] Both the aforementioned flexible shaft conveying device 2 and brush cylinder 4 are fixed to a wedge-shaped adjustment platform at one end of the frame 1. The wedge-shaped adjustment platform includes an upper platform 27 and a lower platform 28 with a wedge-shaped guide sliding fit. The lower platform is fixed to the frame, and a lead screw connecting seat 29 is fixed on one side of the lower platform. The lead screw 30 is threadedly engaged with the lead screw connecting seat, and one end of the lead screw abuts against the upper platform. The other end of the lead screw is connected to a rotating handle 31. Under the axial pushing action of the lead screw, the upper platform is adjusted in height relative to the wedge surface of the lower platform. The upper platform simultaneously supports and fixes the flexible shaft conveying device and the brush cylinder. The flexible shaft conveying device includes a flexible shaft clamping conveyor wheel set 202 and a servo motor 201 that drives the flexible shaft clamping conveyor wheel set to rotate. The principle of the flexible shaft clamping conveyor wheel set is that when the flexible shaft clamping conveyor wheel set clamps the flexible shaft and rotates, it drives the flexible shaft to form an axial horizontal movement.

[0024] The brush cylinder 4 is located on the right side of the flexible shaft conveying device 2. The flexible shaft 3 extends horizontally into the brush cylinder and is fixedly connected to the brush 5. The left end of the brush cylinder is provided with a flexible shaft sliding seat 20 that slides with the flexible shaft. The flexible shaft sliding seat is provided with a shaft hole that slides with the flexible shaft. The left end of the shaft hole is provided with a sealing cavity. The sealing cavity is provided with a sealing ring 21 that forms a sliding seal for the flexible shaft. The outer end of the sealing cavity is threadedly connected to an end cap 22 to limit the sealing ring. The middle part of the shaft hole is provided with an air inlet 2001 that connects to an external air source. Air enters through the air inlet to form an air seal between the flexible shaft and the through hole. The right end of the flexible shaft sliding seat has a sliding cavity, and a sliding sleeve 23 is provided in the sliding cavity to form a limiting sliding along the shaft hole axially. The sliding sleeve has an inner hole that slides with the flexible shaft, and a spring 24 is provided to abut against the inner end of the sliding cavity. A proximity switch 25 is fixedly provided on the circumferential surface of the flexible shaft sliding seat. The contact of the proximity switch extends into the sliding cavity. At the connection between the brush and the flexible shaft, there is a limiting part 501 that abuts against the end of the sliding sleeve. That is, when the limiting part moves to the end of the sliding sleeve with the flexible shaft, it pushes the sliding sleeve to compress the spring until the sliding sleeve contacts the contact of the proximity switch. The proximity switch forms a control connection with the flexible shaft conveying device. The flexible shaft conveying device uses the contact signal of the proximity switch as the initial position for the flexible shaft stroke control. The right end of the brush cylinder has a pipe joint 26 for sealing connection fitting 19. The circumferential surface of the brush cylinder has a liquid inlet 401 that communicates with the interior and an upward-facing overflow pipe 402. The end of the overflow pipe is open.

[0025] The aforementioned support assembly is fixed to the upper surface of the frame 1. The support assembly includes a cleaning tank 6, a pipe positioning bracket fixed inside the cleaning tank, and a roller bracket 16 for rolling support of the pipe fitting 19, as well as an electric gripper 17 for clamping the pipe fitting. The electric gripper is fixedly connected to a power cylinder 18. The power cylinder drives the electric gripper to move in a direction parallel to the corresponding pipe fitting. That is, when the power cylinder pushes the electric gripper into position, the electric gripper causes the pipe fitting to form a sealed connection with the pipe joint 26 of the brush cylinder 4; when the power cylinder pulls the electric gripper into position, it causes the pipe fitting to separate from the pipe joint of the brush cylinder. A guide channel is provided at the bottom of the cleaning tank, and a circulation tank 7 filled with cleaning fluid is provided at the right end of the frame. The liquid in the cleaning tank is guided to the circulation tank through the guide channel. The circulation tank is connected to the inlet 401 of the brush cylinder through a pump 8 and a pipeline 9. A flow regulating valve is provided in the pipeline, and the open end of the overflow pipe 402 of the brush cylinder faces into the cleaning tank. The above realizes the supply and circulation of cleaning fluid.

[0026] like Figure 5 As shown, the complete set of equipment also includes a pipe length measuring device 32 for measuring the length of the pipe fitting 19 to be cleaned. The pipe length measuring device is located at the pipe fitting loading position on one side of the frame 1. The pipe length measuring device includes a pipe fitting support frame. One end of the pipe fitting support frame is provided with a limiting end 3201 that abuts against one end of the pipe fitting. The other end of the pipe fitting support frame is provided with a measuring end 3202 that slides axially relative to the pipe fitting support frame. The measuring end is provided with a measuring sensor. When the pipe fitting is located in the pipe fitting support frame and one end abuts against the limiting end, the measuring end contacts the other end of the pipe fitting to measure the length of the pipe fitting. The measuring sensor is connected to the flexible shaft conveying device 2 for control. The flexible shaft conveying device adds the pipe fitting length value measured by the measuring sensor to a set length as the stroke length of the flexible shaft 3 driving the brush 5 to reciprocate linearly, thereby realizing the effective control of the reciprocating stroke of the brush by the flexible shaft conveying device.

[0027] In actual use, this complete set of equipment includes several sets of brush cleaning devices arranged side by side on the frame 1. Each brush cleaning device corresponds to cleaning one pipe fitting, i.e., one cleaning station. The pipe positioning supports of each cleaning station are located in the same cleaning tank 6. One side of the cleaning tank is the pipe fitting loading side, and the other side is the pipe fitting unloading side. A pipe fitting lifting and conveying mechanism is provided at each cleaning station in the cleaning tank. Each pipe fitting lifting and conveying mechanism includes a fixed frame 10, a tilting frame 11, a hinge plate 12, a drive cylinder 13, and a tilting plate 14. The fixed frame is fixed to the cleaning tank, and the tilting frame is parallel to and above the fixed frame. The two sides of the tilting frame are movably hinged to the two sides of the fixed frame through at least two sets of hinge plates. The frame remains horizontal when it is flipped and lifted relative to the fixed frame via a hinge plate. The fixed frame is hinged to the cylinder seat end of the drive cylinder, and the push rod end of the drive cylinder is hinged to the tilting frame. That is, the drive cylinder links the tilting frame to flip and lift or lower relative to the fixed frame. Several flipping plates are fixedly provided on the upper surface of each tilting frame, and the top surface of the flipping plate is a guide slope. In the initial state, the tilting frame is not lifted relative to the fixed frame, and the slope of the flipping plate is lower than the pipe support height of the pipe positioning bracket in the corresponding cleaning station. When the tilting plate is flipped and lifted to the position relative to the fixed frame, the slope of the flipping plate will lift the pipe in the pipe positioning bracket in the corresponding cleaning station and guide it along the slope into the pipe positioning bracket of the next cleaning station or the pipe unloading side of the cleaning tank. The above realizes the horizontal transport of pipes in the cleaning tank. In order to make the guide of the pipes into the corresponding pipe positioning bracket more reliably and stably, the upper part of the above tilting frame can also be fixedly provided with a limiting bracket 15 to prevent the pipes from rolling away from the pipe positioning bracket.

[0028] Each of the aforementioned brush cleaning devices can also correspond to an independent circulation tank 7, pump 8, and pipeline 9. The bottom of the cleaning tank is divided to form independent guide channels for cleaning each pipe fitting 19, with each guide channel directing the flow to its corresponding circulation tank. This achieves multi-stage cleaning of the pipe fittings, meaning a single pipe fitting undergoes multiple cleaning passes. The circulation tanks for each cleaning stage are filled with the required cleaning solution to achieve the corresponding cleaning effect.

[0029] The aforementioned frame 1 is fixedly equipped with a guide tube 301 that guides the flexible shaft 3 for storage. The guide tube includes a bent section and a straight section. The bent section is fixed to the input end of the flexible shaft conveying device, and the straight section is arranged along the length of the frame, resulting in a more reasonable overall spatial layout and convenient storage of the flexible shaft. The flexible shaft includes a core shaft and a protective sleeve for the outer core shaft. The core shaft is made of fiberglass rod, carbon fiber rod, or spring steel wire, and the protective sleeve is made of flexible plastic.

[0030] The working method of this high-speed reciprocating brush cleaning system for pipe walls is as follows: First, the flexible shaft conveying device 2 adds a set length to the length measured by the pipe length measuring device 32 on the pipe fitting 19 to form the reciprocating stroke length of the flexible shaft 3 and the brush 5. Then, the pipe fitting to be cleaned is connected to the pipe joint 26 of the brush cylinder 4 through the pipe fitting conveying device and the pipe positioning bracket to form a seal. Next, the pump 8 is turned on, and the cleaning fluid in the circulation tank 7 is continuously fed into the brush cylinder through the pipeline 9 and the inlet 401. The flexible shaft conveying device is turned on, and the flexible shaft drives the brush into the pipe fitting to form a high-speed reciprocating brushing. The brushing speed of the brush in the pipe fitting is 1 to 10 m / s. When the cleaning fluid continuously fed into the brush cylinder inlet brushes along the end of the pipe fitting, the cleaning fluid flows out along the end of the pipe fitting, and the overflow pipe of the brush cylinder is in a non-draining state; when the brush slides back from the end of the pipe fitting towards the brush cylinder, the overflow pipe drains the fluid. When the flexible shaft drives the brush to reset, the limiting part 501 between the flexible shaft and the brush abuts against the end of the sliding sleeve 23 inside the flexible shaft sliding seat 20. The sliding sleeve compresses the spring 24 until it contacts the contact point of the proximity switch 25. The proximity switch will send a trigger signal to the flexible shaft conveying device. The flexible shaft conveying device will identify the current position of the flexible shaft as the initial position for the next reciprocating brush stroke, ensuring the accuracy of each reciprocating stroke of the brush. During the high-speed reciprocating cleaning process of the brush, high pressure and negative pressure will be formed inside the pipe. The overflow pipe can effectively balance the high pressure and negative pressure. Specifically, when high pressure is formed inside the pipe, the cleaning fluid in the brush head and pipe is discharged through the overflow pipe, forming a pressure relief state; when negative pressure is formed inside the pipe, the liquid storage in the overflow pipe, together with the liquid inlet of the brush cylinder, can quickly compensate the cleaning fluid into the pipe, so that there is always sufficient cleaning fluid in the pipe, ensuring the cleaning effect. Before cleaning is complete, turn off the pump to stop supplying liquid to the brush cylinder. The flexible shaft then drives the brush to perform 1-5 reciprocating brushing operations to drain any remaining cleaning liquid from the pipe fittings. This completes the cleaning and drainage process. After cleaning, the pipe fittings are automatically transported or unloaded at the workstation using the pipe positioning bracket and the pipe fitting conveying mechanism. The process is quick and convenient.

[0031] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made by those skilled in the art based on existing common knowledge shall also fall within the protection scope of the claims of this utility model.

Claims

1. A complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls, the complete set of equipment including a frame (1), a brush cleaning device provided on the upper part of the frame, the brush cleaning device including a flexible shaft (3) with a brush (5) connected to the end, a flexible shaft conveying device (2) for driving the flexible shaft to reciprocate linearly, a brush cylinder (4) for guiding the flexible shaft and the end brush, and a support assembly for positioning and supporting the pipe fitting (19) to be cleaned; characterized in that: The flexible shaft conveying device (2) is fixed to one end of the frame (1). The flexible shaft conveying device includes a flexible shaft clamping conveying wheel group (202) and a servo motor (201) that drives the flexible shaft clamping conveying wheel group to rotate. When the flexible shaft clamping conveying wheel group clamps the flexible shaft (3) and rotates, it drives the flexible shaft to form an axial horizontal movement. The brush cylinder (4) is fixed to the frame and located on the right side of the flexible shaft conveying device. The flexible shaft extends horizontally into the brush cylinder and is fixedly connected to the brush (5). The left end of the brush cylinder forms a sliding seal with the flexible shaft, and the right end is provided with a pipe joint (26) for sealing connection to the pipe fitting (19). The circumferential surface of the brush cylinder is provided with an inlet (401) that communicates with the interior and an overflow pipe (402) that is set upward. The end of the overflow pipe is open. The support assembly is fixed to the upper end face of the frame. The support assembly includes a cleaning tank (6) and a pipe positioning bracket fixed in the cleaning tank. When the pipe to be cleaned is sealed to the pipe joint of the brush cylinder, the pipe is located in the pipe positioning bracket. The bottom of the cleaning tank is provided with a guide channel, and the right end of the frame is provided with a circulation tank (7) filled with cleaning liquid. The liquid in the cleaning tank is guided to the circulation tank through the guide channel. The circulation tank is connected to the liquid inlet of the brush cylinder through a pump (8) and a pipeline (9). A flow regulating valve is provided in the pipeline, and the open end of the overflow pipe of the brush cylinder faces into the cleaning tank.

2. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The left end of the brush tube (4) is provided with a flexible shaft sliding seat (20) that slides with the flexible shaft (3). The flexible shaft sliding seat is provided with a shaft hole that slides with the flexible shaft. The left end of the shaft hole is provided with a sealing cavity. The sealing cavity is provided with a sealing ring (21) that forms a sliding seal for the flexible shaft. The outer end of the sealing cavity is connected to an end cap (22) that limits the sealing ring. The middle part of the shaft hole is provided with an air inlet (2001) that connects to external air intake. Air intake between the flexible shaft and the shaft hole forms an air seal.

3. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 2, characterized in that... The right end of the flexible shaft sliding seat (20) is provided with a sliding cavity, and a sliding sleeve (23) is provided in the sliding cavity to form a limiting sliding along the shaft hole axial direction. The sliding sleeve is provided with an inner hole that slides with the flexible shaft, and a spring (24) is provided between the sliding sleeve and the inner end of the sliding cavity. A proximity switch (25) is fixedly provided on the circumferential surface of the flexible shaft sliding seat. The contact of the proximity switch extends into the sliding cavity. The connection between the brush (5) and the flexible shaft (3) is provided with a limiting part (501) that forms a limiting position relative to the end of the sliding sleeve. When the limiting part moves to the end of the sliding sleeve with the flexible shaft, it pushes the sliding sleeve to compress the spring until the sliding sleeve contacts the contact of the proximity switch. The proximity switch forms a control connection with the flexible shaft conveying device (2). The flexible shaft conveying device uses the signal of the proximity switch as the initial position for the flexible shaft stroke control.

4. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The complete set of equipment includes a pipe length measuring device (32) for measuring the length of the pipe fitting (19) to be cleaned. The pipe length measuring device is located at the pipe fitting loading position on one side of the frame (1). The pipe length measuring device includes a pipe fitting support frame. One end of the pipe fitting support frame is provided with a limiting end (3201) that abuts against one end of the pipe fitting. The other end of the pipe fitting support frame is provided with a measuring end (3202) that slides axially relative to the pipe fitting support frame. The measuring end is provided with a measuring sensor. When the pipe fitting is located in the pipe fitting support frame and one end abuts against the limiting end, the measuring end contacts the other end of the pipe fitting to measure the length of the pipe fitting. The measuring sensor is connected to the flexible shaft conveying device for control. The flexible shaft conveying device adds the pipe fitting length value measured by the measuring sensor to a set length as the stroke length of the flexible shaft (3) driving the brush (5) to reciprocate linearly.

5. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The complete set of equipment includes a wedge-shaped adjustment platform, which includes an upper platform (27) and a lower platform (28) with wedge-shaped guide sliding fit. The lower platform is fixed to the frame (1). A lead screw connecting seat (29) is fixed on one side of the lower platform. The lead screw (30) is threadedly fitted with the lead screw connecting seat, and one end of the lead screw abuts against the upper platform. The other end of the lead screw is connected to a rotating handle (31). The upper platform is adjusted in height relative to the wedge surface of the lower platform under the axial pushing action of the lead screw. The upper platform also supports and fixes the flexible shaft conveying device (2) and the brush cylinder (4).

6. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The complete set of equipment includes several sets of brush cleaning devices arranged side by side on the frame (1). Each brush cleaning device corresponds to cleaning one pipe fitting, that is, to one cleaning station. The pipe positioning brackets of each cleaning station are located in the same cleaning tank (6). One side of the cleaning tank is the pipe fitting loading side, and the other side is the pipe fitting unloading side. A pipe fitting lifting and conveying mechanism is provided in the cleaning tank corresponding to each cleaning station. Each pipe fitting lifting and conveying mechanism includes a fixed frame (10), a tilting frame (11), a hinge plate (12), a drive cylinder (13), and a tilting plate (14). The fixed frame is fixed to the cleaning tank, and the tilting frame is parallel to the fixed frame above it. The two sides of the tilting frame are connected to the two sides of the fixed frame by at least two sets of hinge plates to form a flexible connection. The rotating frame is horizontally connected to the fixed frame and remains horizontal when it is flipped and raised relative to the fixed frame via the hinge plate. The fixed frame is hinged to the cylinder seat end of the drive cylinder, and the push rod end of the drive cylinder is hinged to the rotating frame. That is, the drive cylinder links the rotating frame to flip and raise or lower relative to the fixed frame. Several flip plates are fixedly provided on the upper surface of each rotating frame, and the top surface of the flip plate is a guide slope. In the initial state, the rotating frame is not raised relative to the fixed frame, and the slope of the flip plate is lower than the pipe support height of the pipe positioning bracket in the corresponding cleaning station. When the flip plate is flipped and raised to the position relative to the fixed frame, the slope of the flip plate will lift the pipe in the pipe positioning bracket in the corresponding cleaning station and guide it along the slope into the pipe positioning bracket of the next cleaning station or the unloading side of the pipe.

7. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 6, characterized in that... Each brush cleaning device of the complete set of equipment corresponds to an independent circulation tank (7), pump (8) and pipeline (9), and the bottom of the cleaning tank (6) is divided to form an independent guide channel corresponding to the cleaning guide of each pipe (19), and each guide channel guides the flow to the corresponding circulation tank.

8. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The pipe positioning support in the cleaning tank (6) includes a roller support (16) for rolling support of the pipe fitting (19) and an electric gripper (17) for clamping the pipe fitting. The electric gripper is fixedly connected to a power cylinder (18). The power cylinder drives the electric gripper to move in a direction parallel to the corresponding pipe fitting. When the power cylinder pushes the electric gripper into place, the electric gripper drives the pipe fitting to form a docking with the pipe joint (26) of the brush cylinder (4). When the power cylinder pulls the electric gripper into place, it drives the pipe fitting to separate from the pipe joint of the brush cylinder.

9. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The frame (1) is fixedly provided with a guide tube (301) that forms a receiving and guiding function for the flexible shaft (3). The guide tube includes a bent section and a straight section. The bent section is fixed to the flexible shaft input end of the flexible shaft conveying device, and the straight section is arranged along the length direction of the frame.

10. The complete set of equipment for high-speed reciprocating brush cleaning of pipe inner walls according to claim 1, characterized in that... The flexible shaft (3) includes a core shaft and a protective sleeve for the outer core shaft. The core shaft is made of fiberglass rod, carbon fiber rod, or spring steel wire, and the protective sleeve is made of flexible plastic.

Images